Siemens 6ES7223-1BF00-0XA0 Programmable Logic Controller Module

Siemens 6ES7223-1BF00-0XA0 is a SIMATIC S7-200 EM223 digital I/O module that provides four optically isolated digital inputs and four digital outputs (4 DI / 4 DO), designed for use with S7-21x CPUs in the S7-200 family and powered from a 24 V DC supply. The module's compact footprint measures 60 mm high by 90 mm wide by 90 mm long and it weighs about 0.18 kg, making it a convenient plug-in expansion for compatible S7-200 controllers in machine automation, packaging lines, or simple control panels. With optical isolation between the field signals and the controller, each channel helps protect the CPU from voltage spikes and electrical noise, enabling reliable sensing of switches, sensors, and relay-driven actuators in industrial environments. Note that Siemens lists this part as discontinued, reflecting its place in the aging S7-200 line; some distributors still offer used or refurbished units, while availability of new stock may be limited.